Thermostatic control for ironing machines



Jan, 6, -l

W. l. TWOMBLY THERMOSTATIC CONTROL FOR IRONING MAQHINES Filed oct. 26, 1921 3 Sheets-Sheet l -Nl/ENTR l ./cvv ATTUR/VEY Jan. 6. l 925- W` l. TWOMBLY THERMOSTATIC CONTROL FOR IRONING MACHINES 15 Sheets-Sheet 5 Filed Oct. 26, 1921 on the line E--F of Fig. 3. Fig. l5 is a sec- Flatented Jan. 6, Y

UNITED' STATE-s WILLARD I. 'rwoMBLY 1,522,087l PATENT OFFICE.

NEWARK, NEW JERSEY, AVCQRPQRATION OF NEW J'EEtSIlilY.

THEnMosTAric coNTRoL Application filed-october 26.y 1921.

. To all Awiwfmllz't may con/ Gema Be it known that I, WILLARD I. TwoMLY,

a citizen of the United States, residing in theiborough of Manhattan, city,county, and 5. State of New York, have inventedl certain through the connection a which isA connew and useful Improvements inf Thermostatic' Controls forY Ironing Machines, of which the following is a specication. My invention relates to thermostatic con- .trols for ironing machines... I will describe a thermostatic control applied' to"'an ironing machine and embodyingmy invention and then point out the novel featuresy in claims.

In the accompanying drawings, 1 is` a top view of a thermstatlc control embody? ing-myA invention. Fig. 2 is a side elevation thereof showing in dotted lines a portion of 'an ironing machine, andthe, adjacentpipe connections. Fig.,3 is an' end elevation'of/ Fig. 2. f Fig. 4 is'a cross-sectional view taken tional view taken on the line A-B yof Fig.A 2. Fig. 6 is a sectional view taken on the line C--D of Fig. 3. Fi 7 is a lsectional view taken on the line,G- of Fig. 4. Fig. 8is afperspective 'view of a portion 'of an ironing machine, having a thermostatic conchine, shown l1n trolapplied thereto, and embodying my invention. Fig. 9 is a perspective view of an ironing machine, partlywbroken away and showing the location'of the thermostatic control embodying my invention. Fig. 10 is a detail cross-sectional view of the ironing machine of Fig.' 9 lat the location of the thermostatic control. v A

Similar letters of reference designate .cor-

responding parts in all of the figures. K f

Referringl more particularly to Figs. 8, 9\

- and l0, the ironing ,machine there shown comprises a suitablev framework A upon which the usual worktable a is supported, and in which the ironing roller A1 (having the usual covering a7) is journalled in such -manner that it canbe rotated. The means.l for rotating it are not shown, and may be any well known in the practical art. Az designates the ironing shoe, which as usual has a polished surface adjacent the-roller A4. Between these members the various articles areV ironed. The shoe A2 is pivotally mounted in the framework as usual, and is rocked on its pivots by the -treadle al Aand levers a2, a?. In 'the form'of ironing ma# the` drawings, the shoe is ron. Bonino-MACHINES.

serial N5. 510,651.

. shown as beifng'provded with the usual gas trolled by a valve a6. Instead the ironing roller maybe heated. Includedin the piping to the burner and between it' and the source of gasl supply is a therinostatic control indi- .cated generallyy by B, which as shown is preferably the burner.. y Y The several parts of the thermostatic control xB are enclosedin ay casing 7),* which is provided with7 a flange '51, by means ofI .which it is secured directlyl to. a wall of the heated member, andas shown, to the rear surface of the shoe. ,Thethermostat T of the control is secured at one end directly to the wall of thef shoe by means of a stud or Y I rivet t of copper or other good heat conducting metal, while its other end supports a valve V." The thermostat T as here shown, is composed of' two metals welded together throughout their 'entire length, and having widely different co-eiiicients of expansion, as for example, steel and brass. The valve,V is provided withal stem o, which is suitably located midway of the ,ends of or NEW Yomgiv. Y., AssIGNon To ELA. IWILSON COMPANY, o-F

connected with the free end .of the thermo-,-

stat. As the thermostat expands under the influence of heat, the valve .Y moves to its seat S bygravity, and when the thermostat contracts lit lifts thevalve from the Seat. The valve is guided in its movementsto and yfroml the seat S by -the ribs or projections "v1. Thevalve seat S is provided with acup pfortion s on which the valve V seats, and with a plurality of openings-s1 at the base thereof through which the gas escapes into a. passage fm, leading to a mixing device (see Fig.. 6) generally designated M. 'The seat isalso provided with a s2 which works in a-plug 83/ carried by the casing. The seat' S may therefore be moved toward and away from the valve, according' to what temperature it is desired tomaintain for the shoe A2. has a certain Vamount of movement for a certain degree of temperature, and therefore when it has moved, the distance for the desired degree ofl temperature', the valve should Abe ."cated to cut of the further supply of gas to the. burner except for the miniite amountl through,y the byfpassj. \If desired,

That is,\the thermostat` a temperature scale and pointer may be pro,-

vided for the valve seat, in order that the oroper `position, of the valve may be obtained for any desired temperature.

A The mixing chamber M, maybe of any well known construction, and as here shown it comprises an adjustable needle m1 for controlling the flow of gas, and an adjustable air shutter m2, so that proper mixture may be secured. 'The gas mixture passes to the burner through the connection m3.A

\ lThe operation of the device will be obvious. The controlB is 'adjusted to supply the necessary amount ci' gas to keep the shoe at the required temperature for ironing without scorchingor burning. The advantages of the control will be appreciated because of the fact that the ironing machine is called upon'to iron allsorts of articles from a handkerchief to a wet blanket or table cloth, etc.I It is obvious that the namount of heat extracted from ythe shoe is.

vastly different when ironing small work such as napkins and handkerchiefs, than" when ironing a wet or damp blanket `or table cloth. But with the use of the control the same temperature can be maintained when ironing no matter what the artlcle may be and still avoid burning or scorching. f f

Claims- A Having thus described my invention,`what I claim as new is:

l. A. thermostatic control for the shoes of ironing machines and the like, comprising a shoe, a gas burner outside of said shoe for heating the same, a casing yadapted to be attached to such shoe, a flexing thermostatic element in said casing adapted to contact with said shoe when said casing is attached,

a gas inlet connection and a gas outletconnectlon for said casing, a valve between said inlet and said outlet and an operative conl between the valve and the thermostatic element, a burner substantiallyv the length of and outside of said shoe, and a connection between said burner and said casing. 3. In a deviceof the kind described, a member to be heated, a gas burner outside of said member adapted to 'heat the same, a thermostatic element of the flexing type below said burner adjacent the heated side of such member, a casing for said element adapted yto protect said element from air currents and to conduct gas from a supply line to the inlet connection for said burner and a valve in said casing controlled by said element.

4. 'A device as characterized in claim 3, in whichfthe thermostatic element is in metallic contact with the member to be heated. I

5. In a device of the kind described, a member to be heated, a gas burner adapted to heat one side of said member, a valve in the supply line for saidV burner, a thermostatic element in metallic contact with the heated side of said member but out of the zoneI of the flame generated by said burner and an operative connection between said valve and said element.. i

WILLARD I. TWOMBLY.

Jthe shoe above said thermostatic element 

